ABEC 3
INNER RING
Specifications for Metric and Inch Ball Bearings (all tolerances shown are in .0001 inch)Bore Diameter dmmOver | Bore Diameter dmmIncl. | Bore Diameter dInchesOver | Bore Diameter dInchesIncl. | Bore Tolerance LimitsdmLow | Bore Tolerance LimitsdmHigh | Bore Tolerance Limitsdmin | Bore Tolerance Limitsdmax | Raceway Radial Runout |
---|---|---|---|---|---|---|---|---|
0 | 10 | 0 | 0.3937 | -3 | +0 | -4 | +1 | 2 |
10 | 18 | 0.3937 | 0.7087 | -3 | +0 | -4 | +1 | 3 |
18 | 30 | 0.7087 | 1.1811 | -3 | +0 | -4 | +1 | 3 |
30 | 50 | 1.1811 | 1.9685 | -4 | +0 | -5 | +2 | 4 |
50 | 80 | 1.9685 | 3.1496 | -4 | +0 | -6 | +2 | 4 |
80 | 120 | 3.1496 | 4.7244 | -6 | +0 | -8 | +2 | 5 |
120 | 150 | 4.7244 | 7.0866 | -7 | +0 | -9 | +3 | 7 |
150 | 180 | 4.7244 | 7.0866 | -7 | +0 | -9 | +3 | 7 |
180 | 250 | 7.0866 | 9.8425 | -8 | +0 | -11 | +4 | 8 |
OUTER RING
Specifications for Metric and Inch Ball Bearings (all tolerances shown are in .0001 inch)Bore Diameter dmmOver | Bore Diameter dmmIncl. | Bore Diameter dInchesOver | Bore Diameter dInchesIncl. | Outside Diameter Tolerance LimitsDmHigh | Outside Diameter Tolerance LimitsDmLow | Outside Diameter Tolerance LimitsOpen BearingsDmax | Outside Diameter Tolerance LimitsOpen BearingsDmin | Outside Diameter Tolerance LimitsShielded/Sealed BearingsDmax | Outside Diameter Tolerance LimitsShielded/Sealed BearingsDmin | Radial Runout |
---|---|---|---|---|---|---|---|---|---|---|
0 | 18 | 0 | 0.7078 | +0 | -3 | +1 | -4 | -2 | -5 | 4 |
18 | 30 | 0.7078 | 1.1811 | +0 | -3 | +1 | -4 | +2 | -5 | 4 |
30 | 50 | 1.1811 | 1.9685 | +0 | -3 | +2 | -5 | +4 | -7 | 4 |
50 | 80 | 1.9685 | 3.1496 | +0 | -4 | +2 | -6 | +4 | -8 | 5 |
80 | 120 | 3.1496 | 4.7244 | +0 | -5 | +3 | -7 | +6 | -10 | 7 |
120 | 150 | 4.7244 | 5.9055 | +0 | -6 | +3 | -8 | +6 | -11 | 8 |
150 | 180 | 5.9055 | 7.0866 | +0 | -7 | +3 | -9 | +6 | -12 | 9 |
180 | 250 | 7.0866 | 9.8425 | +0 | -8 | +4 | -11 | +8 | -15 | 10 |
250 | 315 | 9.8425 | 12.4015 | +0 | -10 | +4 | -12 | +8 | -16 | 12 |
WIDTH TOLERANCES
Specifications for Metric and Inch Ball Bearings (all tolerances shown are in .0001 inch)Bearings Other Than Duplex Width of Individual Inner or Outer Ring
Inner Ring BoremmOver | Inner Ring BoremmIncl. | Inner Ring BoreInchesOver | Inner Ring BoreInchesIncl. | Width Tolerance Limits | Width Tolerance Limits |
---|---|---|---|---|---|
0 | 10 | 0 | 7.0866 | +0 | -50 |
180 | 315 | 7.0866 | 12.4015 | +0 | -100 |
— | — | — | — | — | — |
Duplex Bearings Total Width of Inner or Outer Ring*
Inner Ring BoremmOver | Inner Ring BoremmIncl. | Inner Ring BoreInchesOver | Inner Ring BoreInchesIncl. | Width Tolerance Limits | Width Tolerance Limits |
---|---|---|---|---|---|
0 | 80 | 0 | 3.1496 | +0 | -200 |
80 | 180 | 3.1496 | 7.0866 | +0 | -300 |
180 | 315 | 7.0866 | 12.4015 | +0 | -400 |